Printer&#39;s plate-hook



J. W. PITT AND G. SAGUE.

PRINTERS PLATE HOOK. APPLICATION FILED APR.24, I918. RENEWED DEC. 22. I919.

1 ,348 Patented Aug. 3, 1920.

v 2 SHEETS-SHEET I.

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J. W. PITT AND G. SAGUE.

PRINTER'S PLATE HOOK. APPLICATION FILED APR. 24. I918. RENEWED 05c. 22. 1919. 1,348,663.

Patented Aug. 3, 1920.

2 SHEETS-SHEET 2.

UNITED STATES" PATENT OFFICE.

JOHN W. P ITT, OFBA'lI-I, AND GEQRGE SAG'UE, OF HIGHLAND, NEW YORK.

PRINTERS PLATE-HOOK.

Application filed April 24, 1918, Serial No. 230393.

To all whom it may concern:

Be it known that we, JOHN W. Prrr, acitizen of the United States, and a resident of Bath, Steuben county, State of New York, and Gnonen Snsn'n, a citizen of the United States, and a resident of Highland, Ulster county, State of New York, have jointly invented certain new and useful Improvements in Printers Platelooks, of which the following is a specification.

lhe object of the invention is to provide a highly efficient platehook for the use of printers in securing stereotype, electrotype and other printing plates on the bed or cylinder of a printing press, and a further purpose of the invention is to provide a plate-hook which may be readily and firmly applied to position and conveniently detached, when desired, from the plate and bed. @ne object of the invention is, also, to provide a plate-hook which is readily adjustable to the irregularities frequently found on the edges of printing plates.

The invention consists in the novel features and structure hereinafter described, and particularly pointed out in the claims.

Referring to the accompanying drawings Figure 1 is a top view of a portion of the bed of a press having thereon a printing plate held by hooks constructed in accordance with and embodying our invention, four of the hooks being shown;

Fig. 2 is a vertical section, on an enlarged scale, through a portion of the same, the section being" on the dotted line 2-2 of Fig. 1;

Fig. 3 is vertical section through a portion of the same and on an enlarged scale, taken on the dotted line 33 of Fig. 1;

Fig. 4 is a vertical section, through a portion of the same, taken on the dotted line 4l of Fig. 2; r

Fig. 5 is a perspective view illustrating the members of the plate hook of our invention separated from one another and ready to be assembled;

Fig. 6 is a sectional view through a portion of a bed and the plate hook of our invention and is presented to indicate that the groove in the bed instead of being of the dove-tail shape shown in Figs. 3 and 4, may have plain vertical side-walls;

Fig. 7 is a corresponding view, illustrating another well known form of groove to which our invention is applicable;

Fig. 8 is a top view showing a portion of Specification 0: Letters Patent.

Patented Aug. 3, 1920.

Renewed December 22, 1919. Serial No. 346,772.

a bed and plate, the latter being shown as held by 'a hook embodying some of the features of our invention, and

Fig. 9 is a sectional viewthrough the same, taken on the dotted line 99 of Fig. 8.

In the drawings, referring to Figs. 1 to 5 inclusive, l0 designates a section of a well known form of type-bed or block or the surface of a cylinder, upon which an electrotype or other printing plate 11 is shown as ecured by the plate-hooks of our invention, said bed, block or cylinder being formed with parallel diagonally disposed grooves 12 which, in the construction shown in Figs. 1 to t inclusive, are of dove-tail formation or have downwardly diverging side walls. The plate 11 is also of customary form and has downwardly and outwardly beveled edges, as usual.

5 Our invention resides in the hooks or clamps adapted to the grooves of the bed 10 and affording means for very firmly and efficiently securing the plate 11 in proper position on said bed.

The preferred embodiment of our invention is illustrated in detail in Figs. 1 to 5 inclusive, and each of the hooks or clamps is composed of the three main features illusti d separately in Fig. 5, one of these features being a body portion 13 having a longitudinally projecting extension 14, another of said features being a block 15 having thereon and disposed at an anglethereto a clamping member 16 and carrying a screw 17, and the third feature being a wedge 18 preferably having a roughened or ribbed outer surface 19. The wedge 18 has a downwardly and outwardly inclined outer surface, bearing the roughness 19, and a vertical inner surface which is formed with a substantially central vertical transverse recess 20.

The body portion 13 has an outer downwardly and outwardly inclined surface, a vertical inner surface and a vertical substantially central transverse recess 21 formed in said inner surface, and said body is 01 wedge shape longitudinally considered, being thinner at its outer end than at its inner end and at its inner surface being intended to match the inner surface of the wedge 18, which is thicker at its outer end than at its inner end.

The block 15 may be of ordinary rectangular outline adapted to the grooves of the bed 10, and the clamping member 16 thereon may be formed integrally therewith or secured thereto, as may be found convenient. The block contains a longitudinal hole or cylindrical bore 22 adapted to'adjustably U V 20,121 inthe wedge 18 and body 13 to assist both inmoving the wedge 18 to its binding receive the extension or stem 14, which is rigid with the body 13 and preferably said.

extension or stem and said body are in one piece.

The extension or stem 11- is, generally speaking, of cylindrical outline atits sides and lower part and loosely fitted to the out-. im of the bore or hole 22, and at its outer 1 end said extension or stem 14: is formed with a vertical lip 23, between which and the body 13, the extension or stem 14x has aflat downwardly and outwardly inclined smooth surface'2 1, which is adapted to rece1ve the rounded smooth 'end of the screw 17, as

' shown in Fig. 2, whose axis stands at'a right angle to said surface 21, and which screw is within a threaded opening or hole 25 in the block 15.

The outer surfaces of the body and wedge 18 -are downwardly and outwardly inclined, as shown'in Fig. 3, so as to match the downwardly and outwardly inclined side walls of the grooves 12 in the bed 10, and the outer surface of the with. The stem 11 is cylindrical in its side and lower portions so that the block 15 may have angular adjustment thereon to permit the clamping members 16 to engage the beveled edges of the plate 11 regardless of such irregularities as, may be present on said edges, and the outer edge of the member 16 which engages the plate ll'is downwardly and inwardly beveled or undercut, as shown in Fig. 5, so as ,to lap upon and closely engage the edge of said plate.

In assembling the several features shown in Fig. 5, it being understood that the screw 17 had been moved upwardly to free the block 15 from the stem 14-, the block 15 is slid upon the stem 141 or to about the position shown in Fig. 2, and then the'screw 17 is moved downwardly, with the use of an ordinary screw-driver, until the point of the screw is below the horizontal plane of the upper edge of the lip 23 and over the inclined surface 2 1 of said stem 1 1. When the parts 13, 14: and 15 are thus brought together, they may be handled as a unit, since the screw 17 and lip 23 constitute stops "which prevent the accidental separation of 13, so as to wedge the same against one side wall of the groove and become wedged may be m'ovedalmost to its final position to bind the body 13. in fixed position in the groove, by the pressure of the finger or of a small tool against the outer end of the same, this causing the recess 20 therein to come nearly into alinement with the recess 21 in the body 13,:and thereupon the end of a small screwdriver may be inserted in both of said recesses and given a turn tending to tighten the wedge. 18 against the body 13 and consequently tightening said body and wedge against the opposite walls of the groove 12. The wedge 18 is employed to bind the body 13 and extension or stem 11 in fix d position in the groove 12, the clamping member 16 then being in near relation to or against the plate 11, and thereupon the attendant willscrew the screw 17 downwardly against the inclined surface 2 1 of the extension or stem 14, and this will have the effect of causing the block 15 to move outwardly or in a direction toward the outer end of said extension or stem 14, until it becomes arrestedby a very firm clamping engagement of the inclined edge of the clamping member 16 with the edge of the plate 11, whereupon the movement of said block 17 will cease. but the clamping member 16 will, by the action of the screw 17, remain firmly bound against the plate 11, while the wedge 18 will securely hold the body 13 and stem 1% against any longitudinal movement whatever.

Vhen it is desired to release the hook from the plate 11, a screwdriver may be inserted in the recesses 20, 21 and given a slight turn in adirection to slide the wedge 18 outwardly along the groove 12 and from the body 13, and this will loosen said wedge so that it may be readily removed, leaving body 13, stem 14 and block 15 free to he slid outwardly from and release the plate 11.

Frequently the edges of plates 11 are or become irregular and our invention adapts the clamping member 16 to engage the edge of the plate regardless of its peculiarities of formation, since the block 15 may turn angularly on the extension or stem 14, when ever required, to adapt 'the edge of the clamping member to the edge of the plate, this angular adjustment of the block 15 being'automatic during the tightening of the screw 17 against said extension or stem 141 and being caused by the irregularity that the edge of the plate may possess and which forces the block 15 and clamping member 16 to adapt themselves to the condition of the plate.

Our invention thus comprises the features shown in Fig. '5, and these features when in their assembled relation are illustrated in Fi s. 1 to & inclusive.

ur invention is not confined to the downwardly and outwardly inclined walls of the grooves 12, since some bed-plates have grooves containing parallel side walls. In Fig. 6 we illustrate a modification in which 26 indicates a bed-plate having grooves 27 whose side walls are parallel with each other, and in this modification we illustrate the wedge and body portion of our hook as having outer vertical walls instead of downwardly and outwardly inclined surfaces, the wedge being numbered 28 and the body portion 29. The inner recesses of said wedge and body portion are numbered 30, 31, respectively, and the clamping member corresponding with the member 16 of Fig. 5, is numbered 32.

Fig. 7 corresponds with Fig. 6 and also with Fig. 3, except that it shows a bed-plate having a groove 33 which has parallel side walls about its upper edge and downwardly and outwardly inclined side walls below said vertical walls, this indicating another known type of groove in bed-plates. Fig. 7 showing a modification, we number the wedge 34, the body of the clamp 35, the clamping member 36 and the rooves in the wedge and body as 37, 38. The structure shown in Fig. 7 differs from that shown in Fig. 3 merely in the outline of the outer surfaces of the wedge and the body portion of the hook.

In Figs. 8 and 9 we illustrate another modification in which in lieu of the wedge 18 we employ an inclined screw 39 extending downwardly at an angle through the body portion 40 and against the side surface of a groove 41 in a bed-plate 4:2 on which is positioned a printing plate 4:3. The body 10 is adapted to the dove-tail formation of the groove 41 and at the screw 39 is open at its side to permit said screw to engage the undercut side wall of the groove 11. The body 4C0 has connected with it a stem or extension 44 corresponding with the extension or stem 14 of Fig. 5, and upon said stem or extension 441 is mounted a slidable block 15 corresponding with the block 15 of Fig. 5 and carrying a clamping member 46 and screw 47 whose action and functions are the same as the clamping member 16 and screw 17, shown in Fig. 5, and therefore not necessary to be again explained in detail. The difference between the construction shown in Figs. 8 and 9 and that illustrated in Fig. 5 is that we make use of the screw 39 as a substitute for the wedge 18. We however very greatly prefer the construction shown in Fig. 5, but not wishing to limit the invention in every instance to all of the details shown in Figs. 1 to 5 inclusive, we present Figs. Sand 9 as indicating that our invention is not in every respect confined to such details.

What we claim as our invention and de sire to secure by Letters-Patent, is:

1. A printers plate-hook adapted to the grooves in the beds and the like of presses, comprising a body portion having a stem projecting longitudinally from one end thereof and formed with a downwardly and forwardly inclined upper surface, a block receiving and slidable on said stem and carrying a plate-clamping member and also a screw adapted to be engaged with said inclined surface for moving said block and clamping member, and means for securing said body portion in stationary position.

2. A printers plate-hook adapted to the grooves in the beds and the like of presses, comprising a body portion having a stem projecting longitudinally from one end thereof and formed with a downwardly and forwardly inclined upper surface and having an upturned lip at its forward end, a block receiving and slidable on said stern and carrying a plate-clamping member and also a screw adapted to be engaged with said block and clamping member, and wedging means for securing said body portion in stationary position.

3. A printers plate-hook adapted to the grooves in the beds and the like of presses, comprising a body portion having a stem projecting longitudinally from one end thereof and formed with a downwardly and forwardly inclined upper surface, a block receiving and slidable on said stem and carrying a plate-clamping member and also a screw adapted to be engaged with said inclined surface for moving said block and clamping member, and a wedge slidable along the side of said body-portion for securing the same in stationary position, said body-portion being of wedge-shape on one face to cooperate with said wedge.

4. A printers plate-hook adapted to the grooves in the beds and the like of presses, comprising a body portion having a stem projecting longitudinally from. one end thereof and formed with a downwardly and forwardly inclined upper surface, a block receiving and slidable on said stem and carrying a plate-clamping member and also a screw adapted to be engaged with said inclined surface for moving said block and clamping member, and a wedge slidable along the side of said body-portion for securing the same in stationary position, said body-portion being of wedge-shape on one face to cooperate with said wedge and the matching faces of said body-portion and wedge being vertically recessed to receive a tool for moving said wedge.

5. A printers plate-hook adapted to the grooves in the beds and thelike of presses, comprlslng aubody portion having a stem projecting longitudinally from one end thereof and formed with a downwardly and '5 forwardly inclined upper surface, a block receiving and slidable on said stem and carrying a plate-clamping member and also a screw vadapted toybeengaged with said inclined surface for moving said block and clamping member, and a wedge slidable along the side of said body-portion for securing the same in stationary position, said body-portion being of wedge-shape on one face to coiiperate with said wedge and said body-portion and wedge being vertically recessed to receive: a tool by the turningof which said wedge may be moved from its locking engagement with said body-portion.

6. A printers plate-hook adapted to the grooves in the beds and the like of presses,

comprising a body portion having a stem projecting longitudinally from one end thereof and formed witha downwardly and forwardly inclined upper surface and rounded side and lower surfaces, a block having a longitudinal bore freely receiving said stem and on which said block is slidable, and said block also having a plate clamping member and alsoa screw adapted to be engaged with said inclined surface for moving said block and clamping member, and. wedging means for securing said bodyportion in stationary position.

, 7. A printers plate-hook adapted tothe '35 grooves in the beds and the like of press'es,

comprising a body portion having a stem projecting longitudinally from one end thereof and formed with a downwardly and forwardly inclined upper surface, a block 40 receiving and slidable on said stem and caralongthe side of said body-portion forsecuring the same in stationary position, said body portion being of wedge-shape on one face to cooperate with said wedge, and said wedge on its outer side face being roughened to firmly bind against the adjacent side wall of said groove. o v.

S. A printers plate-hook adapted to the grooves in the beds and the like of presses,

comprising abody portion having a stem projecting longitudinally from one end thereof and formed with a downwardly and forwardly inclined upper surface, a block receivingv and slidable on said stem and carrying a plate-clamping member: and also a screw adapted to beengaged with said in clined surface for moving said block and clamping member, and a wedge slidable along the side of said body-portion for securing the same in stationary position, said body-portion being of wedge-shape on one face to cooperate with said wedge, and said body-portion and wedge having downwardly diverging side surfaces to engage correspondingly shaped sidewalls of said groove.

9. A printers plate hook adapted to the grooves in the beds and thelike of presses,

comprising a member provided with means for securing it fixedly in the bed groove, a second member having a clamping jaw, a stem or spindle on one of said members entering a "longitudinally disposed socket in the other member for swiveling said members together, andrmeans for giving the jaw carrying member its plate-clamping movement with respect to the fixed member, said means being-a beveled face'on the spindle and a screw 'set in the member having a socket impinging on said beveled face.

Signed at New York, in the county and State of New York, this 18th day of April, 1918. i

JOHN W. PITT. GEORGE SAGUE. Witnesses:

- ARTHUR MARION,

CHAS. C. Gun. 

